diff options
Diffstat (limited to 'kernel/acct.c')
| -rw-r--r-- | kernel/acct.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/kernel/acct.c b/kernel/acct.c index 2a7c933651c7..f4330acead46 100644 --- a/kernel/acct.c +++ b/kernel/acct.c @@ -483,10 +483,14 @@ static void do_acct_process(struct file *file) ac.ac_ppid = current->parent->tgid; #endif - read_lock(&tasklist_lock); /* pin current->signal */ + mutex_lock(&tty_mutex); + /* FIXME: Whoever is responsible for current->signal locking needs + to use the same locking all over the kernel and document it */ + read_lock(&tasklist_lock); ac.ac_tty = current->signal->tty ? old_encode_dev(tty_devnum(current->signal->tty)) : 0; read_unlock(&tasklist_lock); + mutex_unlock(&tty_mutex); spin_lock_irq(¤t->sighand->siglock); ac.ac_utime = encode_comp_t(jiffies_to_AHZ(cputime_to_jiffies(pacct->ac_utime))); |